From: Ian Romanick Date: Thu, 26 Nov 2009 00:31:28 +0000 (-0800) Subject: Improve implementation of GL_POINT_SPRITE_COORD_ORIGIN errors X-Git-Url: https://git.libre-soc.org/?a=commitdiff_plain;h=0528f40e3b8ca3e59d3a641c4504d34cf9364578;p=mesa.git Improve implementation of GL_POINT_SPRITE_COORD_ORIGIN errors This enum is only supported for OpenGL 2.0. If a driver supports OpenGL 1.4 and GL_ARB_point_sprite, using this enum should generate an error. This is important because, for example, i915 and i830 can support GL_ARB_point_sprite, but they cannot support GL_POINT_SPRITE_COORD_ORIGIN. This commit just removes the check for NV_point_sprite, which is completely wrong, and add some comments describing what the code should do. I don't see an easy way to check for version >= 2.0 from inside Mesa. Perhaps we should add an extension GL_MESA_point_sprite_20 (like Intel's old GL_EXT_packed_pixels_12) to indicate that this added bit of functionality is available. Also note that glean's pointSprite test only checks for GL_ARB_point_sprite before trying to use GL_POINT_SPRITE_COORD_ORIGIN. Naturally, that fails on non-2.0 implementations (i.e., Mac OS X on GMA 950). --- diff --git a/src/mesa/main/points.c b/src/mesa/main/points.c index 4c8fc1f72e0..b3305448904 100644 --- a/src/mesa/main/points.c +++ b/src/mesa/main/points.c @@ -200,7 +200,12 @@ _mesa_PointParameterfv( GLenum pname, const GLfloat *params) } break; case GL_POINT_SPRITE_COORD_ORIGIN: - if (ctx->Extensions.ARB_point_sprite || ctx->Extensions.NV_point_sprite) { + /* This is not completely correct. GL_POINT_SPRITE_COORD_ORIGIN was + * added to point sprites when the extension was merged into OpenGL + * 2.0. It is expected that an implementation supporting OpenGL 1.4 + * and GL_ARB_point_sprite will generate an error here. + */ + if (ctx->Extensions.ARB_point_sprite) { GLenum value = (GLenum) params[0]; if (value != GL_LOWER_LEFT && value != GL_UPPER_LEFT) { _mesa_error(ctx, GL_INVALID_VALUE,